Subscriber Help and Services

How to Activate a New Subscription to PNAS Online

Once PNAS has received your payment and created a new record for your subscription, you will receive an email from PNASsubsdept{at}nas.edu with an Access Code. After you receive the email, click here to review the PNAS Online Subscription Agreement. By activating your online subscription, you agree to all subscription agreement terms and conditions.

Next, you must ACTIVATE your online subscription as shown below. This step need only be done once, the first time you access
PNAS Online. Please note that if you renew an active subscription, you will not need to repeat the activation process. The
expiration date for your online record will be updated shortly after your renewal is processed.

How to Use PNAS Online Without a Subscription

Access to the complete PNAS Online (full text and graphics of recent papers and papers published online in PNAS Early Edition)
is limited to paid subscribers and to NAS members. Without a subscription to PNAS Online, you still have access to tables
of contents, abstracts, full-text searching, and all content older than 6 months at no cost and without having to register.